format test code

plot/thdf5.py

@@ -26,8 +26,6 @@ class DataTest(unittest.TestCase):
             val = item[1]
             print(str(key, encoding="utf-8"), str(val, encoding="utf-8"))
 
-
-
     def test_regex(self):
         text = 'succm-lingzh-1-4-30-1618291260'
         result = re.split(r'-', text)